Non-glare headlight.



vv. vv. METZGER,1.A. ALTENDO'RF @L c. M. VERR|LL. `NON-GLARE HEADLIGHT. APPLICATION FILEYD APR. 13, l9l5.

llllw., Patented goor.. 1915.

Umain Ajsirarirasi Parana oca.

WILLIAM W. METZGER, JULIAN A. ALTENDORF, AND CALVIN M: VERRILL, OF LOS ANGELES, CALIFORNIA.

'NoN-GLARE HEADLIGHT.

Specification of Letters Patent.

Patented @et 5, i915.,

Appiieatin med Aprii 13, 1915. serial No. 21,043.

`Grlare Headlights, of which the following is a specipation. l l

This invention relates particularly to automobile head lights and the like; and it is a primary object to provide a simple and effective means for completely obviating the glare of the ordinary headlight or of any other light where it is desirable to eradicate the glare.

It -is well known that automobile head lights as now used throw suoli a strong and concentrated light as to practically blind any person toward whom they are ad vancing.

Our invention so completeiy obviates 'the glare of the headlight that one may look directly into our light without discomfort; and, at the same time, our head light throws a most effective light ahead and very efficiently illuminates the road.

` One of our primary objects is, while eleminating the glare, to not decrease the lighting efficiency of the'head light; and

this object, and others we accomplish by means of a device shown in the accompanying drawings and described in the following specification.

For the purpose of this specification we illustrate in the accompanying drawings a preferred and specific form of our device in which drawings- Figure 1 is a vertical longitudinal section of a head light constructed after our invention, Fig. 2 is a perspective showing the non-glare member thereof, and Fig. A3 is a front elevation of our device.

due to excessively strong concentrated light, thrown from vthe reflector, the light being of any kind from the lamp 13 to the reflector 12.

Our method of overcoming the glare comprises fundamentally the i'nterposition of a member between the lamp13 and the reflector 12, it being the function of this member to partially and diffusely transmit the light through from the lamp tothe refiector. Although there are many forms V'which may be used for this member,'we prefer to use a form illustrated in the drawings, comprising 'a bell shaped member' 14 of a suitable translucent material.. Preferably the material is glass frosted on both sides; and one side, preferably the exterior, is superficially treated with the substance radiated directly and without interruption known as gold size. This substance has thel eifec'tof putting a certain amount of gloss on theeXterior surface of the frosted glass; and, although our arrangement operates very satisfactorily without the size, the application of size brings the effect to the highest state of perfection.

The member limay be mounted around the lamp in any suitable manner, preferably being mounted as shown in Fig. 1. Two rubber washers 15 are used and. a small spring '16 presses the rear -washer against the flange 14* of the member ligand presses the flange forwardly against the front washer 15. The bell shaped member 14 is `thus held securely in position without danger of breaking. The front end of the bell shaped member is' entirely open as shown at 14h. Light thrown from the reflector is very powerful and the illumination is in no way inferior to the illumination by the ordinary head light; but the. glare is entirely eliminated.

Having described a'preferred form of our invention, we claim:

A non-glare headlight, embodying in combination a lamp, a reflector .beliind and around the lamp, said reflector adapted normally to throwV the light from said lamp in a concentrated stream ahead, and a translucent member around and behind the lamp and of. 'such extent as to intercept the lightvl from .thelamp .which ywould otherwise be the reflector. Theresulting.beam of light l lll@ transmitted directly to the reflector, the front of said member being open to allow direct radiation from the lamp ahead independently of the reflector, whereby the re- Hector is illuminated only by di`used light from'the translucent memberv and tha-t por tion of the light which is transmitted for- Wardly from the lamp is allowed to be freely transmitted independently ofthe reflector.

In Witness that we claim the foregoing 1l we have hereunto subscribed our names this A7th day of April 1915.

- W. lV. 'METZGER J. ALTENDORF. C. M. VER-BILL.

Witnesses:

JAMES T. BARKELEW, ELWOOD H. BARKELEW. 

